I think the version of Fitbit I have has UK supermarkets mainly inputted into it - but maybe there are other versions - depending on the part of the World you are living in. Another good data website (that is free) is Myfitnesspal - and that might have more USA based foods in the data base - but again, I'm not sure.
A break-down of the meal is as follows (and I have changed the input to 'pea soup' because the one I had put in didn't give the exact contents you require - so please bear in mind that the totals will be slightly different to the ones I gave you earlier):
Peanut butter: 1 tablespoon Calories: 94; Fat 8.1g; Fibre 1g; Carbs 3.1g Protein 4g
Pea soup: 300g Calories: 198; Fat: 3.5g; Fibre: 6g; Carbs 31.8g Protein 10.3g
Wholemeal bread (2 slices) Calories 256; Fat 5g; Fibre: 5.6g; Carbs 47.3g and Protein: 7.7g
Total calories of the meal = 548, Total Fat: 16.5g; Total fibre: 12.6g; Total carbs: 82.2g and total protein 22.1g
I hope this is helpful for you.